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Variação da concentração de marcadores inflamatórios em lavados uterinos de éguas com endometrite naturalmente acometida /Mendonça, Victor Hugo. January 2016 (has links)
Orientador: Juliana Regina Peiró / Banca: Guilherme de Paula Nogueira / Banca: Valéria Marçal Felix de Lima / Banca: João Pessoa Araujo Junior / Banca: Daniel de Jesus Cardoso de Oliveira / Resumo: A endometrite é um dos problemas de maior frequência e relevância na reprodução de éguas. Os objetivos deste trabalho foram determinar o perfil das concentrações de IFN-γ, TNF-α, IL-2, IL-6, IL-10 e IL-4 presentes no soro sanguíneo e no lavado uterino de éguas com endometrite naturalmente adquirida e naquelas clinicamente saudáveis, bem como definir o padrão da resposta imune (TH1 e TH2); observar se a inflamação local no útero pode gerar inflamação sistêmica; e, verificar se o lavado uterino e o tratamento com enrofloxacina alteram o perfil de concentração das citocinas nestas éguas. Foram utilizadas 12 éguas da raça Quarto de Milha incluídas em programa de transferência de embriões e subdivididas em 2 grupos, com 6 animais cada: GC (animais sadios) e GE (animais com endometrite). Amostras de soro e lavado uterino foram colhidas nos dias 1 (início do cio), 2, 3, 4 e 5 dias após o início do cio. As concentrações de TNF-α, IL-2 e IFN-γ (TH1); IL-4, IL-6, e IL-10 (TH2) foram mensuradas por citometria de fluxo pelo método Cytometric Bead Array (CBA). As diferentes citocinas avaliadas nas amostras de lavado uterino, à exceção da IL-4, apresentaram concentrações mais elevadas em éguas do GE comparadas às do GC no dia 1. A utilização de lavados uterinos seriados associados a antibioticoterapia sistêmica não provocaram alterações significativas nas concentrações de citocinas presentes no útero de éguas do GC. As concentrações séricas de citocinas não diferiram entre os grupos. Nosso... (Resumo completo, clicar acesso eletrônico abaixo) / Abstract: Endometritis is one of the most frequent and relevant diseases in mares. The goals of this study were to determine the profile concentration of cytokines such as IFN-γ, TNF-α, IL-2, IL-6, IL-10 and IL-4 present in blood serum and uterine lavage of mares with naturally acquired endometritis and those clinically healthy, well as set the pattern of immune response (TH1 and TH2); see if local inflammation in the uterus can cause systemic inflammation; and check whether the uterine lavage and the treatment with enrofloxacin alter the concentration profile of cytokines in these mares. Twelve Quarter Horse mares from an embryo transfer program were divided into 2 groups, with 6 animals each: control group (CG, healthy animals) and experimental group (EG, animals with endometritis). Blood serum and uterine lavage samples were collected on days 1 (onset of estrus), 2, 3, 4 and 5 (after onset of estrus). Concentrations of TNF-α, IL-2 and IFN-γ (TH1); IL-4, IL-6, and IL-10 (TH2) were measured by flow cytometry using the Cytometric Bead Array method (CBA). All cytokines, but not IL- 4, evaluated in the uterine lavage samples showed higher concentrations in mares with endometritis compared to healthy animals on day 1. The use of serial uterine lavages associated with systemic antibiotic therapy did not cause significant changes in concentrations of cytokines in the uterus of mares without endometritis. Serum concentrations of cytokines did not differ between groups. Our results establishe... (Complete abstract click electronic access below) / Doutor
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Approche alternative du lavage de sols pollués par des hydrocarbures aromatiques polycycliques : utilisation des cyclodextrines avec procédés de recyclageViglianti, Christophe 22 October 2007 (has links) (PDF)
La pollution des sols par les Hydrocarbures Aromatiques Polycycliques (HAP) se présente habituellement sous forme de goudrons hydrophobes. Le lavage des sols s'effectue souvent avec des détergents ou des solvants organiques qui présentent des impacts environnementaux non négligeables. Ce travail propose une méthode alternative basée sur l'emploi de molécules cages d'origine naturelle, non toxiques et facilement biodégradables, les β-cyclodextrines qui solubilisent en milieu aqueux des polluants hydrophobes comme les HAP. Une méthode de recyclage des cyclodextrines a été mise au point (baisse des coûts en produits). Des essais ont été menés sur un panel de sols d'anciens sites industriels à l'échelle laboratoire et semi-pilote, avec deux tests concluants du procédé complet en fonctionnement continu. L'utilisation des cyclodextrines sera dans la plupart des cas une meilleure méthode que celles employant les surfactants ou les solvants organiques au regard de la directive IPPC de 1996.
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Prévention du risque infectieux en médecine ambulatoire évaluation des pratiques par les résidents de la Faculté de médecine de Créteil lors de leur stage chez le praticien /Varnoux, Fabien. Mangin, Hervé. January 2006 (has links) (PDF)
Thèse d'exercice : Médecine. Médecine générale : Paris 12 : 2006. / Titre provenant de l'écran-titre. Bibliogr. f. 126-129.
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Radiation induced pneumonitis : clinical and experimental studies with special emphasis on the effect of smokingNilsson, Kenneth January 1992 (has links)
Bronchoalveolar lavage (BAL) is an established method providing diagnostic support and evaluation of disease activity in interstitial lung disease (ILD). The aims of the present investigation were 1) to study the inflammatory response in pneumonitis evoked by irradiation. 2) to evaluate how well lung tissue inflammation is reflected in BAL findings. 3) to study the effect of smoking on radiation-induced pneumonitis. BAL was performed in 21 patients (11 smokers, 10 non-smokers) who were treated for breast cancer, stage 1 (TjMaNq) by post-surgery irradiation to an accumulated target dose of 56 Gy. It was founa that irradiation induced an alveolitis in the non-smoking patient group while the smoking patients did not differ from their smoking controls. The alveolitis in non-smokers was characterized by an increase in lymphocytes, mast cells and elevated concentrations of hyaluronan (HA), and fibronectin (FN). Three of the non-smoking patients had chest X-ray infiltrates indicating the presence of pneumonitis. An animal experimental model for radiation-induced pneumonitis and fibrosis was established in rats, allowing comparative analysis of BAL fluid and morphology. In the rat model a divergence was noted between the differential cell counts in BAL and cells observed in the interstitial tissue, which was most notable for neutrophils (PMN) and mast cells whereas there was a good correlation between HA content in BAL and HA deposition in the lung tissue. A marked infiltration of intraseptally-located mast cells occurred during the pneumonitis-phase, and this increase was paralleled by a deposition of HA in the interstitial tissue. Histochemical fixation and staining properties of the mast cells revealed that the majority of these cells were of connective tissue mast cell type (CTMC). Compound 48/80, a mast cell secretagogue, significantly altered the HA content both in BAL and in lung tissue in the irradiated animals. Regular treatment throughout the whole experimental period induced depletion of mast cell granules and a decrease in HA deposition whereas 48/80 treatment during the pneumonitis phase enhanced HA deposition. A rat model with smoke exposure was developed, and the effect of cigarette smoke on radiation-induced inflammation was studied. Rats that smoked 3 weeks prior to irradiation and continued to smoke throughout the observation period (7 weeks) had a significantly reduced inflammatory response compared to irradiated non-smoking rats. The most prominent BAL findings in the smoke-exposed rats were a decrease in PMN, mast cells and a decrease in HA. In conclusion, irradiation induces an alveolitis characterized mainly by mononuclear cells. Mast cells seem to be of importance in the remodelling of the connective tissue in the radiation-induced inflammatory response. Hyaluronan is an important component in the early connective tissue response preceding later collagen deposition, and its interstitial deposition is very well reflected in BAL. Moreover, tobacco-smoke suppresses the radiation-induced inflammation with a decreased recruitment of effector cells including mast cells. / <p>Diss. (sammanfattning) Umeå : Umeå universitet, 1992, härtill 5 uppsatser.</p> / digitalisering@umu
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The association between rhinitis and asthma of occupational origin /Castaño, Roberto. January 2007 (has links)
The present thesis explores the relationship between occupational rhinitis and occupational asthma under the postulates of the "united airways disease" concept that refers to the multiple links observed between rhinitis and asthma. Accordingly, the main objective of this thesis is to demonstrate the concomitant expression of significant changes in nasal patency and bronchial calibre following exposure to occupational agents during specific inhalation challenges, complementing the assessment with the investigation of changes in markers of airways inflammation in nasal lavage. To achieve the objectives, we set up a protocol to diagnose occupational rhinitis and conducted a study from January 2005 to January 2007 at Hopital du Sacre-Coeur de Montreal in subjects undergoing investigation for occupational asthma. The reliability of the main research tools---acoustic rhinometry and nasal lavage---used to investigate occupational rhinitis was tested by analyzing the reproducibility of the methods. Both methods proved sufficiently reproducible to be included in our investigative protocol. The results presented in this thesis demonstrate a joint reaction of the nose and the lungs in a group of study subjects after performing specific inhalation challenge. This supports the concept of a "united airways disease" and its applicability to rhinitis and asthma of occupational origin. However, the results also show that although occupational rhinitis frequently coexists with occupational asthma it can also be present without occupational asthma. The assessment of upper airways inflammation in a subgroup of study subjects by the nasal lavage method allows us to observe significant changes in eosinophils counts after the challenge that correlates with the decrease in nasal patency observed in the same subjects.
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Bronchoalveolar lavage and serum protein patterns in healthy individuals and sarcoidosis patients : a proteomics approach /Sabounchi Schütt, Fariba, January 2004 (has links)
Diss. (sammanfattning) Stockholm : Karol inst., 2004. / Härtill 4 uppsatser.
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Proteomics of the upper airways : studies on a new lipopolysaccharide-binding protein, PLUNC /Ghafouri, Bijar, January 2005 (has links) (PDF)
Diss. (sammanfattning) Linköping : Linköpings universitet, 2005. / Härtill 5 uppsatser.
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Exosomes in immune regulation and allergy /Admyre, Charlotte, January 2007 (has links)
Diss. (sammanfattning) Stockholm : Karolinska institutet, 2007. / Härtill 4 uppsatser.
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Variação da concentração de marcadores inflamatórios em lavados uterinos de éguas com endometrite naturalmente acometida / Variation of concentration inflammatory markers in uterine fluid from mares with naturally acquired endometritisMendonça, Victor Hugo [UNESP] 20 May 2016 (has links)
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Previous issue date: 2016-05-20 / A endometrite é um dos problemas de maior frequência e relevância na reprodução de éguas. Os objetivos deste trabalho foram determinar o perfil das concentrações de IFN-γ, TNF-α, IL-2, IL-6, IL-10 e IL-4 presentes no soro sanguíneo e no lavado uterino de éguas com endometrite naturalmente adquirida e naquelas clinicamente saudáveis, bem como definir o padrão da resposta imune (TH1 e TH2); observar se a inflamação local no útero pode gerar inflamação sistêmica; e, verificar se o lavado uterino e o tratamento com enrofloxacina alteram o perfil de concentração das citocinas nestas éguas. Foram utilizadas 12 éguas da raça Quarto de Milha incluídas em programa de transferência de embriões e subdivididas em 2 grupos, com 6 animais cada: GC (animais sadios) e GE (animais com endometrite). Amostras de soro e lavado uterino foram colhidas nos dias 1 (início do cio), 2, 3, 4 e 5 dias após o início do cio. As concentrações de TNF-α, IL-2 e IFN-γ (TH1); IL-4, IL-6, e IL-10 (TH2) foram mensuradas por citometria de fluxo pelo método Cytometric Bead Array (CBA). As diferentes citocinas avaliadas nas amostras de lavado uterino, à exceção da IL-4, apresentaram concentrações mais elevadas em éguas do GE comparadas às do GC no dia 1. A utilização de lavados uterinos seriados associados a antibioticoterapia sistêmica não provocaram alterações significativas nas concentrações de citocinas presentes no útero de éguas do GC. As concentrações séricas de citocinas não diferiram entre os grupos. Nossos resultados estabeleceram o perfil de concentração de TNF-α, IFN-, IL-2, IL-6 e IL-10 bem como demonstraram que o padrão TH1 predominou sobre o TH2 no útero de éguas do GE quando comparado ao perfil de animais do GC no dia 1. Como ambas as vias estavam ativadas, sugere-se que o padrão TH0 esteja atuante no ambiente uterino de éguas com endometrite naturalmente adquirida. O tratamento com lavagens uterinas seriadas e antibiótico sistêmico foi eficiente em reduzir a concentração de citocinas no lavado uterino de éguas com endometrite em 72 horas, equiparando-se com os níveis do grupo de éguas saudáveis. / Endometritis is one of the most frequent and relevant diseases in mares. The goals of this study were to determine the profile concentration of cytokines such as IFN-γ, TNF-α, IL-2, IL-6, IL-10 and IL-4 present in blood serum and uterine lavage of mares with naturally acquired endometritis and those clinically healthy, well as set the pattern of immune response (TH1 and TH2); see if local inflammation in the uterus can cause systemic inflammation; and check whether the uterine lavage and the treatment with enrofloxacin alter the concentration profile of cytokines in these mares. Twelve Quarter Horse mares from an embryo transfer program were divided into 2 groups, with 6 animals each: control group (CG, healthy animals) and experimental group (EG, animals with endometritis). Blood serum and uterine lavage samples were collected on days 1 (onset of estrus), 2, 3, 4 and 5 (after onset of estrus). Concentrations of TNF-α, IL-2 and IFN-γ (TH1); IL-4, IL-6, and IL-10 (TH2) were measured by flow cytometry using the Cytometric Bead Array method (CBA). All cytokines, but not IL- 4, evaluated in the uterine lavage samples showed higher concentrations in mares with endometritis compared to healthy animals on day 1. The use of serial uterine lavages associated with systemic antibiotic therapy did not cause significant changes in concentrations of cytokines in the uterus of mares without endometritis. Serum concentrations of cytokines did not differ between groups. Our results established the concentration profile of TNF-α, IFN-, IL-2, IL-6 and IL-10 concentrations and showed that the TH1 immune response predominated over TH2 in the uterus of mares with endometritis when compared to healthy animals on day 1. As both pathways were activated, it is suggested that the TH0 immune response is active in the uterine environment of mares with naturally acquired endometritis. Treatment with serial uterine flushings and systemic antibiotic were effective in reducing the concentration of cytokines in uterine lavage of mares with endometritis in 72 hours, equating to the levels of healthy mares group.
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Elaboration et caractérisation mécanique, hygrique et thermique de composites bio-sourcés / Elaboration and mechanical, hygric and thermal characterization of bio-sourced compositeMazhoud, Brahim 12 December 2017 (has links)
En réponse aux préoccupations environnementales, l'utilisation du béton de chanvre s'est développée ces dernières années et a montré son efficacité d'un point de vue hygrothermique. L’analyse de son cycle de vie souligne l’intérêt environnemental du chanvre et montre que le constituant le plus impactant est le liant, généralement à base de chaux. L'objectif de cette thèse est de développer des composites à base de chanvre en substituant à la chaux une matrice minérale moins impactante. Plusieurs formulations sont réalisées avec différentes matrices liantes et différents dosages en chanvre. D'une part, le liant commercial ThermOⓇ est utilisé pour produire des bétons de chanvre «classiques», servant de référence comparative. D' autre part, des matrices liantes sont développées à base de fines issues de boue de lavage. La terre commerciale ClaytecⓇ est également considérée. Après avoir présenté les différentes matières premières retenues pour cette étude. Le liant ThermOⓇ est caractérisé pour différents dosages en eau. Les fines issues de boues de lavage font l'objet d'une étude de stabilisation visant à satisfaire des objectifs de résistance mécanique de la matrice liante. Une stabilisation avec 5 % de ciment portland couplé à 5% de ThermOⓇ est retenue pour la suite de l'étude. Cette formulation n'impacte pas significativement la conductivité thermique de la matrice liante, tout en permettant d'atteindre les objectifs mécaniques fixés. Les composites réalisés avec les différents liants sélectionnés présentent des dosages chanvre / liant évoluant entre 0.4 et 0.75, dosage conventionnels pour des applications toit, mur et dalle. Ils sont mis en œuvre par compaction, ce qui conduit à des masses volumiques comprises entre 370 et 6 15 kg/m3 et des porosités comprises entre 70 et 81 %. Les comportements mécaniques, thermiques et hygriques des composites sont évalués. Les performances mécaniques mesurées répondent aux exigences des règles professionnelles Construire en Chanvre, y compris pour les composites réalisés avec des fines non stabilisées. Les isothermes de sorption obtenues sont des sigmoïdes de classe II ou Ill. présentant des teneurs en eau plus élevées pour les composites réalisés avec le ThermOⓇ. Les valeurs MBV obtenues montrent que les composites à base de fines ou de terre ClaytecⓇsont meilleurs régulateurs hygriques que les composites réalisés avec le liant ThermOⓇ, respectivement classés excellents et très bons régulateurs hygriques. Les performances thermiques des composites en permettent un usage en isolation répartie. Au point sec, la conductivité thermique dépend essentiellement de la masse volumique, sans impact du type de liant. Lorsque l'humidité relative ambiante augmente, la conductivité thermique des composites à base de liant ThermOⓇ est plus impactée que celle des autres composites, en lien avec les isothermes de sorption. Cette étude montre donc toute la pertinence du développement de composites formulés à l'aide de fines issues de boues de lavage en substitution de la chaux. / In response to environmental concerns, the use of hemp concrete has been developed in recent years and has shown its efficiency from a hygrothermal point of view. Its life cycle analysis underlines the environmental interest of hemp and shows that the most impacting component is the binder, usually lime-based. The aim of this thesis is to develop hemp-based composites by substituting lime with a less impacting mineral matrix. Several formulations are made with different binder matrices and different hemp content. On the one hand, the ThermO® commercial binder is used to produce "classic" hemp concrete, which are used as a comparative reference. On the other hand, binder matrices are developed based on washing mud fines. Claytec® commercial earth is also considered. After presenting the different raw materials selected for this study, the ThermO® binder is characterized with several water ton binder ratios. The washing mud fine stabilisation is investigated regarding mechanical resistance objectives. A stabilization with 5% of portland cement coupled with 5% of ThermO® is selected for the following development. This formulation does not significantly affect the thermal conductivity of the binder matrix, while allowing to achieve the fixed mechanical objectives. The composites made with the various selected binders have hemp I binder ratios ranging between 0.4 and 0.75, conventional ratio for roof, wall and floor applications. They are implemented by compact ion, which leads to densities ranging from 370 to 61 5 kg/m3 and porosities ranging from 70 to 81%. The mechanical. Thermal and hygric behaviors of the composites are investigated. The measured mechanical performances meet the requirements of the professional rules Construire en Chanvre, even for composites made with unstabilized fines. The sorption isotherms obtained are class II or III sigmoid, with higher water contents for composites made with ThermO®. The MBV values obtained show that the composites made with fines and with Caytec® earth are better hygric regulators than the composites made with ThermO® binder, respectively classified as excellent and as very good hygric regulators. The thermal performances of the composites allow a use in distributed insulation. At the dry point, the thermal conductivity mainly depends on the density, without impact of the type of binder. As ambient relative humidity increases, the thermal conductivity of ThermO®, binder-based composites is more impacted than that of other composites in connection with sorption isotherms. This study thus shows the relevance of the development of composites formulated with washing mud fine as a substitute tor lime.
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